CHM2210F11EXIIV2

CHM2210F11EXIIV2 - NAME_ LAST FIRST _ Panther ID SECTION:...

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NAME___________________________________ ___________________________ LAST FIRST Panther ID SECTION: A.M. P.M. (Circle One) FLORIDA INTERNATIONAL UNIVERSITY CHM 2210-U01, U02 – ORGANIC CHEMISTRY I Fall 2011 Dr. Keller Dr. Landrum EXAM II (V2)
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CHM 2210-U01,U02, Fall 2011 Exam II (V2), Page 2 1. Hydrogen bonding A) requires at least one N-H, O-H, or F-H bond. B) is a common intermolecular attractive force in alkanes. C) can occur between a compound and water even if the compound cannot hydrogen bond with itself. D) is the weakest intermolecular attractive force. E) both A and C 2. What shape does the methyl cation, CH 3 1+ , have? A) Octahedral B) Tetrahedral C) Trigonal planar D) Linear E) Trigonal pyramidal 3. Identify the atomic orbitals that make up the C-H sigma bond in HCN. C H A) (p, p) B) (sp, sp 3 ) C) (sp, sp) D) (p, 1s) E) (sp, 1s) 4. In which molecule does the arrangement of valence electrons on the central atom have a linear geometry? ( hint: Draw the Lewis structures before deciding. ) A) SO 2 B) HCN C) N 2 O D) H 2 S E) OF 2 5. How many sp 3 -sp 3 σ bonds are there in the following substance? ( hint: ID the hybridization of each C first ) A) 1 B) 2 C) 4 D) 6 E) 8 6. Select the LEAST polar bond. A) C-O B) C-F C) C-H D) N-F E) N-H 7. Indicate the hybridization of the elements (except for the hydrogens) in the following compound: A) x – sp 2 ; y - sp 2 ; z - sp 2 B) x – sp 2 ; y – sp 3 ; z – sp 3 C) x – sp; y - sp 2 ; z – sp 3 D) x – sp 2 ; y - sp 2 ; z – sp 3 E) None of these choices is correct. 8. The following electron configuration represents _______. A) the ground state of boron. B) an excited state of boron. C) the ground state of nitrogen. D) the ground state of carbon. E) an excited state of carbon. H 2 C N CH 3 x y z 1s 2s 2p x 2p y 2p z
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CHM 2210-U01,U02, Fall 2011 Exam II (V2), Page 3 CF 3 CCl 3 9. In which of the following would you expect the central atom to be sp 2 hybridized (or approximately sp 2 hybridized)? ( hint: draw the Lewis structure before deciding ) A) AlCl 4 1- B) CO 2 C) CCl 4 D) F 2 CO E) All of these 10. VSEPR theory predicts an identical shape for all of the following, except : (hint: draw the Lewis structures before deciding) A) H 2 CO B) BH 3 C) BH 4 1- D) CH 3 1+ E) All have the same geometry
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CHM2210F11EXIIV2 - NAME_ LAST FIRST _ Panther ID SECTION:...

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